Welcome to the Winobloggers webpage! Students and professors from different universities meet to discuss their findings on Winogradsky columns they constructed!
We learn how to formulate hypotheses, observe, comment, ask and reply to questions related to our scientific experiments.

Winogradksy columns

'In the field of observation, chance only favors the prepared mind' Pasteur 1854

Blog posts

Tuesday, 8 December 2015

Marialena
Kafritsa University of Ioannina
Winogradsky column

Here I
present my data from Voidomatis river (23th October 2015) . In order
to manufacture my Winogradsky column I used two bottles (1,5L). Both of my
columns contain pieces of paper, 1 egg with its shell and baking powder. In one
bottle I had extra sulfur source by adding vitamins. I use the column without
the sulfur source as control in order to observe any changes with the addition
of sulfur. Both of the columns are exposed to sunlight and room temperature.

This is the
procedure I used to construct my winogradsky columns:
I took mud from the river and mixed it with my nutrients and placed into 1/3 of
my bottle. In one bottle I added sulfur vitamin pills. The other 2/3 had mud
without nutrients. Lastly in the rest of the bottle I added river water.

Here is a photo
of the sulfur added bottle (day 1)

And here
are my columns after 36 days
(Right bottle is control and left bottle
is the one with the added sulfur)

The sediment in both columns seems a little
darker and the river water is starting to get a little greener because of phytoplakton photosynthesis. There are no noticeable differences between the two bottles yet.